How did Jerry and Maya meet for the first time? Join in on their very first case - an exciting adventure that begins when the sisters Hammarabi's book is stolen from Valleby School.

The book carries a mysterious secret, and suddenly everyone at school is a suspect: the fishy caretaker, the gym teacher with the tight jumpsuit, the weird librarian, yes even Principal Brynolfsson herself!The plot thickens and Jerry and Maya are facing a tough challenge. Will they fail in solving their very first mystery?